Nokea
Unilateral or bilateral enlargement of breasts in male:
- A. Mastodynia
- B. Gynecomastia
- C. Mammocele
- D. Teratoma
Correct Answer: B
Rationale: The correct answer is B: Gynecomastia. Gynecomastia refers to the abnormal enlargement of male breast tissue, which can be unilateral or bilateral. This condition is commonly caused by hormonal imbalances, medication side effects, or underlying medical conditions. Mastodynia (A) refers to breast pain, Mammocele (C) is a term for a breast cyst, and Teratoma (D) is a type of tumor that contains multiple types of tissue. Therefore, the correct term for male breast enlargement is gynecomastia.
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Regarding histology of male reproductive system
- A. Leydig cells are found in the seminiferous tubule
- B. Sertoli cells are involved in maturation of spermatids.
- C. The luminal epithelium of efferent ductules is irregular.
- D. Contraction of smooth muscle in vas deferens is stimulated via sympathetic
Correct Answer: C
Rationale: The correct answer is C because the luminal epithelium of efferent ductules is indeed irregular, which helps in absorption and modification of fluid. A, Leydig cells are located outside the seminiferous tubule. B, Sertoli cells provide nourishment and support to developing sperm cells but do not mature spermatids. D, Contraction of smooth muscle in vas deferens is stimulated by the parasympathetic nervous system, not the sympathetic.
Sperm are stores in the ___________, ascend into the ___________ prior to ejaculation, and are discharged from the penis through the ____________
- A. seminiferous tubules, prostate gland, vas deferens.
- B. epididymis, vas deferens, urethra
- C. epididymis, epididymis, urethra
- D. epididymis. Prostate gland, urethra
Correct Answer: B
Rationale: The correct answer is B. Sperm are stored in the epididymis, ascend into the vas deferens prior to ejaculation, and are discharged from the penis through the urethra. The epididymis is where sperm mature and are stored. The vas deferens is the duct through which sperm travels from the epididymis to the urethra for ejaculation. The urethra is the final pathway for sperm to exit the body. Choices A, C, and D are incorrect because they do not follow the correct anatomical pathway of sperm from storage to ejaculation.
Which of the following is/are an example(s) of asexual reproduction?
- A. Fission.
- B. Fragmentation.
- C. Budding.
- D. All of the abov
Correct Answer: D
Rationale: The correct answer is D: All of the above. Asexual reproduction involves the production of offspring from a single parent without the involvement of gametes or fertilization.
- Fission: Organism splits into two or more parts, each regenerating into a new individual.
- Fragmentation: Parent organism breaks into fragments, with each fragment developing into a new individual.
- Budding: New individuals develop as outgrowths or buds from the parent organism.
All these processes result in genetically identical offspring, making them examples of asexual reproduction.
For fertilization to be accomplished, of the secondary sex characteristics sperm release enzymes to break seen in young women? down the corona radiata from their
- A. enlargement of the accessory ________.
- B. mitochondria
- C. breast development
- D. acrosomes
Correct Answer: D
Rationale: The correct answer is D: acrosomes. Acrosomes are specialized vesicles in the head of the sperm that contain enzymes to help the sperm penetrate the outer layer of the egg during fertilization. Enlargement of the accessory organs (choice A), mitochondria (choice B), and breast development (choice C) are not directly related to the process of fertilization and do not involve the release of enzymes to break down the corona radiata. Acrosomes play a crucial role in the fertilization process by facilitating the penetration of the egg's protective layers, making choice D the correct answer.
An 18-yr-old female patient who has been admitted to the emergency department after a motor vehicle crash is scheduled for chest and abdominal x-rays. Which information may alter the plans for the x-rays?
- A. Report of abdominal pain
- B. Positive result of hCG test
- C. Blood pressure of 172/88 mm Hg
- D. Temperature of 102.1°F (38.9°
Correct Answer: B
Rationale: The correct answer is B: Positive result of hCG test. This may indicate that the patient is pregnant, which would significantly alter the plans for the x-rays due to the potential harm to the fetus from radiation exposure.
A: Report of abdominal pain is a common symptom after a motor vehicle crash and would not directly alter the plans for x-rays.
C: Blood pressure of 172/88 mm Hg could indicate hypertension but would not directly impact the need for chest and abdominal x-rays.
D: Temperature of 102.1°F (38.9°C) could suggest an infection but would not typically change the necessity for x-rays.